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  1. #11
    PWCToday.com Is My Home Away From Home fastgtfairlane's Avatar
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    Apr 2010
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    charlotte,nc
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    34
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    Re: Pump rebuild, is it difficult?

    Quote Originally Posted by Yabadabadoo View Post
    Ok, thanks guys. Ya I figured it would be easy, I just didn't want to rip it all apart then realize I need a press or something. I've done motorcycle wheel bearings before, sounds similar. I'll heat up the pump and freeze the bearings, hopefully they'll drop right in.
    Appreciate the help. Cheers
    you dont want to freeze the bearings and heat up the shaft. you want to heat up the inner race of the bearing i wouldnt use anything more than a heat gun for the bearings and freeze the shaft. freezing the shaft will temporarily slightly shrink the shaft and heating up the inner race will temporarily expand the ID. freeze the impeller shaft for 1/2 hour or so then work quickly. youll have about 10 seconds to slide the bearing in place before the heat gets to the impeller shaft and locks it in place. a press is definitely the easiest and best way to remove the old bearings as well as the quickest.
    Last edited by fastgtfairlane; 12-15-2017 at 05:12 PM.
    91 440; PJS Viper 7000, jetsport exhaust mani, factory full pipe, coffman waterbox,solas 17*, jetco worked 440 pump, ocean pro nozzles. shredmaster ocean rideplate and grate combo, wide tray, footholds, deep strake mod, driveshaft fill,650sx quick turn

    build thread part 1: http://www.pwctoday.com/showthread.php?t=331343
    build thread part 2: http://www.pwctoday.com/showthread.php?t=364872
    build thread part 3: http://www.pwctoday.com/showthread.php?t=396154

  2. #12
    PWCToday Regular
    Join Date
    Aug 2017
    Location
    Vancouver Island, Canada
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    133

    Re: Pump rebuild, is it difficult?

    Quote Originally Posted by fastgtfairlane View Post
    you dont want to freeze the bearings and heat up the shaft. you want to heat up the inner race of the bearing i wouldnt use anything more than a heat gun for the bearings and freeze the shaft. freezing the shaft will temporarily slightly shrink the shaft and heating up the inner race will temporarily expand the ID. freeze the impeller shaft for 1/2 hour or so then work quickly. youll have about 10 seconds to slide the bearing in place before the heat gets to the impeller shaft and locks it in place. a press is definitely the easiest and best way to remove the old bearings as well as the quickest.
    Ya gotcha, Iin my mind I'm just remembering wheel bearings on my bike you heat the bearing holder (wheel) to expand it, then freeze the bearings to shrink them then they drop right in as the friction fit is on the outer race..... Heat= expand, freeze = shrink.... I'll get er done.... Thanks guys
    Last edited by Yabadabadoo; 12-28-2017 at 10:16 PM.

  3. #13
    PWCToday.com Is My Home Away From Home fastgtfairlane's Avatar
    Join Date
    Apr 2010
    Location
    charlotte,nc
    Age
    34
    Posts
    3,267

    Re: Pump rebuild, is it difficult?

    which pump are you rebuilding?
    91 440; PJS Viper 7000, jetsport exhaust mani, factory full pipe, coffman waterbox,solas 17*, jetco worked 440 pump, ocean pro nozzles. shredmaster ocean rideplate and grate combo, wide tray, footholds, deep strake mod, driveshaft fill,650sx quick turn

    build thread part 1: http://www.pwctoday.com/showthread.php?t=331343
    build thread part 2: http://www.pwctoday.com/showthread.php?t=364872
    build thread part 3: http://www.pwctoday.com/showthread.php?t=396154

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